6
GRUNDIG Service
Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
TVR 37…, TVR 51…, TVR 55…
Kopfverstärkerplatte – Kopfscheibenmotoransteuerung
Head Amplifier Board – Headwheel Motor Control
0
0
0
0
0
0
0
0
0
NOT USED
ONLY FOR OHAD 4/X
0
4
0
0
DELETE FOR NEW DE-SW
S
S
HMO1
HMO0
HMO3
POS
HMO2
TO SIGNAL CHASSIS
DE 1904
TO SCANNERMOTOR
REEL
+5D
GNDM2
GNDD
+14M2
PG/FG
GNDD
7301 D 6
6300 A 3
5301 E 4
3313 H 7
3312 H 5
3307 H 4
3306 E 5
3305 F 5
3304 F 3
3303 G 2
3302 F 2
3301 G 3
2320 H 6
2319 A 4
2318 E 3
2317 A 3
2316 A 4
2315 G 4
2314 E 4
2313 A 6
2312 A 6
2311 A 5
2310 E 4
2309 A 4
2308 E 6
2307 E 6
2306 E 5
2305 G 3
2304 F 2
2303 G 2
2302 H 5
2301 H 4
2300 G 5
1931 I 4
1930 I 5
GNDD
GNDM2
GNDM2
GNDM2
GNDM2
GNDD
GNDD
GNDD
GNDD
GNDM2
GNDA
GNDA
GNDA
GNDM2
GNDD
GNDM2
GNDD
GNDD
3304
100E
3305
1k
3306
4k7
3302
100E
3303
100E
3312
0E
3313
15k
3301
270E
3307
6300
2310
2315
10n
2316
2317
2318
2306
100p
2307
2308
10n
2309
100n
2311
10n
2312
47n
2313
22n
2319
2301
2302
22n
2300
2320
TDA5241
7301
9
15
11
10
12
13
1
7
14
18
3
17
16
2
6
5
8
4
PROTECT
THERMAL
DEVIDE
BY 2
STAGE2
DRIVER
OUTPUT
STAGE1
DRIVER
OUTPUT
FLYBACK
PUSH/PULL
ROTATION
SPEED &
OUTPUT
STAGE
STAGE
POSITION
DETECTOR
PG/FG
GND2
PG_out
CAP_CDM
Vp
MOT2
NC2
GND1
PG_IN
ADAPTIVE
COMMUNICATION
DELAY
COMMUNICATION
LOGIC
START-UP
OSCILLATOR
TIMING
STAGE3
DRIVER
OUTPUT
CAP_CDS
CAP-CPC
CAP-ST
CTL_IN
CAP_TI
MOT0
MOT3
NC1
MOT1
+
-
CAP-CPC
CAP-CPC
1931
7
6
5
4
3
2
1
+14M2
+14M2
L1
1930
6
5
4
3
2
1
1u
2305
1u
2303
1u
2304
330n
5301
2314
2u2
I
H
G
F
E
D
C
B
A
I
H
G
F
E
D
C
B
A
2
3
4
5
6
7
2
3
4
5
6
7
2
3
4
5
6
7
